224 lines
6.6 KiB
Java
224 lines
6.6 KiB
Java
package cd.test;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.PrintStream;
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import java.util.List;
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import org.junit.Assert;
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import org.junit.Test;
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import cd.Config;
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import cd.Main;
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import cd.backend.codegen.AssemblyFailedException;
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import cd.frontend.parser.ParseFailure;
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import cd.ir.Ast.ClassDecl;
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import cd.util.FileUtil;
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import cd.util.debug.AstDump;
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abstract public class AbstractTestAgainstFrozenReference {
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public static final String SEMANTIC_OK = "OK";
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public static final String PARSE_FAILURE = "ParseFailure";
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public File file, sfile, binfile, infile;
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public File parserreffile, semanticreffile, execreffile, cfgreffile, optreffile;
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public File errfile;
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public Main main;
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public static int counter = 0;
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@Test(timeout=10000)
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public void test() throws Throwable {
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System.err.println("[" + counter++ + " = " + file + "]");
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try {
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// Delete intermediate files from previous runs:
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if (sfile.exists())
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sfile.delete();
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if (binfile.exists())
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binfile.delete();
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runReference();
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List<ClassDecl> astRoots = testParser();
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if (astRoots != null) {
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{
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testCodeGenerator(astRoots);
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}
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}
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} catch (org.junit.ComparisonFailure cf) {
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throw cf;
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} catch (Throwable e) {
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PrintStream err = new PrintStream(errfile);
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err.println("Debug information for file: " + this.file);
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err.println(this.main.debug.toString());
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err.println("Test failed because an exception was thrown:");
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err.println(" " + e.getLocalizedMessage());
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err.println("Stack trace:");
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e.printStackTrace(err);
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System.err.println(FileUtil.read(errfile));
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throw e;
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}
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// if we get here, then the test passed, so delete the errfile:
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// (which has been accumulating debug output etc)
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if (errfile.exists())
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errfile.delete();
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}
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private void runReference() throws IOException, InterruptedException {
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String slash = File.separator;
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String colon = File.pathSeparator;
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String javaExe = System.getProperty("java.home") + slash + "bin" + slash + Config.JAVA_EXE;
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ProcessBuilder pb = new ProcessBuilder(
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javaExe, "-Dcd.meta_hidden.Version=" + referenceVersion(),
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"-cp", "lib/frozenReferenceObf.jar" + colon + " lib/junit-4.12.jar" + colon + "lib/antlr-4.4-complete.jar",
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"cd.FrozenReferenceMain", file.getAbsolutePath());
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Process proc = pb.start();
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proc.waitFor();
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try (InputStream err = proc.getErrorStream()) {
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if (err.available() > 0) {
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byte b[] = new byte[err.available()];
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err.read(b, 0, b.length);
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System.err.println(new String(b));
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}
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}
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}
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private static String referenceVersion() {
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{
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return "CD_HW_CODEGEN_SIMPLE_SOL";
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}
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}
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/** Run the parser and compare the output against the reference results */
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private List<ClassDecl> testParser() throws Exception {
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String parserRef = findParserRef();
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List<ClassDecl> astRoots = null;
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String parserOut;
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try {
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astRoots = main.parse(new FileReader(this.file));
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parserOut = AstDump.toString(astRoots);
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} catch (ParseFailure pf) {
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{
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// For this assignment, we expect all tests to parse!
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throw pf;
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}
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}
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{
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assertEquals("parser", parserRef, parserOut);
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}
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return astRoots;
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}
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private String findParserRef() throws IOException {
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// Check for a .ref file
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if (parserreffile.exists() && parserreffile.lastModified() >= file.lastModified()) {
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return FileUtil.read(parserreffile);
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}
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throw new RuntimeException("ERROR: could not find parser .ref");
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}
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/**
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* Run the code generator, assemble the resulting .s file, and (if the output
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* is well-defined) compare against the expected output.
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*/
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private void testCodeGenerator(List<ClassDecl> astRoots)
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throws IOException {
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// Determine the input and expected output.
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String inFile = (infile.exists() ? FileUtil.read(infile) : "");
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String execRef = findExecRef();
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// Run the code generator:
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try (FileWriter fw = new FileWriter(this.sfile)) {
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main.generateCode(astRoots, fw);
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}
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// At this point, we have generated a .s file and we have to compile
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// it to a binary file. We need to call out to GCC or something
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// to do this.
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String asmOutput = FileUtil.runCommand(
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Config.ASM_DIR,
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Config.ASM,
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new String[] { binfile.getAbsolutePath(),
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sfile.getAbsolutePath() }, null, false);
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// To check if gcc succeeded, check if the binary file exists.
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// We could use the return code instead, but this seems more
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// portable to other compilers / make systems.
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if (!binfile.exists())
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throw new AssemblyFailedException(asmOutput);
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// Execute the binary file, providing input if relevant, and
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// capturing the output. Check the error code so see if the
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// code signaled dynamic errors.
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String execOut = FileUtil.runCommand(new File("."),
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new String[] { binfile.getAbsolutePath() }, new String[] {},
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inFile, true);
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// Compute the output to what we expected to see.
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if (!execRef.equals(execOut))
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assertEqualOutput("exec", execRef, execOut);
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}
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private String findExecRef() throws IOException {
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// Check for a .ref file
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if (execreffile.exists() && execreffile.lastModified() > file.lastModified()) {
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return FileUtil.read(execreffile);
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}
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throw new RuntimeException("ERROR: could not find execution .ref");
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}
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private void assertEquals(String phase, String exp, String act_) {
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String act = act_.replace("\r\n", "\n"); // for windows machines
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if (!exp.equals(act)) {
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warnAboutDiff(phase, exp, act);
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}
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}
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/**
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* Compare the output of two executions
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*/
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private void assertEqualOutput(String phase, String exp, String act_) {
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String act = act_.replace("\r\n", "\n"); // for windows machines
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if (!exp.equals(act)) {
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warnAboutDiff(phase, exp, act);
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}
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}
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private void warnAboutDiff(String phase, String exp, String act) {
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try {
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try (PrintStream err = new PrintStream(errfile)) {
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err.println("Debug information for file: " + this.file);
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err.println(this.main.debug.toString());
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err.println(String.format(
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"Phase %s failed because we expected to see:", phase));
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err.println(exp);
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err.println("But we actually saw:");
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err.println(act);
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err.println("The difference is:");
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err.println(Diff.computeDiff(exp, act));
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}
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} catch (FileNotFoundException exc) {
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System.err.println("Unable to write debug output to " + errfile
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+ ":");
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exc.printStackTrace();
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}
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Assert.assertEquals(
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String.format("Phase %s for %s failed!", phase,
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file.getPath()), exp, act);
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}
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}
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